![]() The Bendix KNS-80 is capable of older VOR/DME RNAV approaches. Therefore, RNAV approaches make more airports accessible under instrument conditions. On the other hand, area Navigation (RNAV) equipment can guide you over any virtual waypoint, which does not necessarily represent an actual ground facility. Ground-based approach procedures, such as ILS or VOR approaches, require expensive facilities to be installed at or around the airport and are limited to point-to-point navigation. APVs, like precision approaches, are flown to a DA, not an MDA. Approach with Vertical guidance (APV): describes precision-like approaches that do not fully comply with ICAO’s annex 10 precision approach requirements.Upon reaching the DA on the glideslope, the pilot must decide whether to continue to land or must immediately start the missed approach procedure. Precision approaches: In addition to the lateral guidance provided by non-precision procedures, precision approaches provide a glideslope to follow down to a Decision Altitude (DA). ![]() If the conditions for a visual descent are not available, the pilot must shoot the missed approach procedure upon reaching the missed approach point, which is usually over the airport. The pilot must stay at or above the MDA until starting the visual descent to landing. Terrain clearance is maintained with step-down fixes and a Minimum Descent Altitude (MDA). Non-precision approaches: Provide lateral guidance (left or right off-course) but no vertical guidance (above or below the glide path).The FAA classifies instrument approach procedures into three categories: For example, you could only fly a “VOR RWY XX” approach with VOR equipment, or an ILS approach with ILS equipment. With older types of approach procedures, the specific equipment required is stated in the chart title. GPS and RNAV approach terminology can be very confusing since modern RNAV procedures usually accommodate more than one type of navigational equipment (such as basic GPS, WAAS, LAAS or multi-sensor FMS) on the same chart. Posts archived posts tutorial training RNAV IFR archived
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